Re: [Xen-devel] [PATCH] [PVOPS] fix gntdev on PAE

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 02/01/2010 07:46 AM, Stefano Stabellini wrote:
> On Mon, 1 Feb 2010, Stefano Stabellini wrote:
>    
> > Hi all,
> > this small patch fixes gntdev on Linux pvops kernels:
> > gnttab_set_map_op and gnttab_set_unmap_op shouldn't take unsigned long
> > as parameters for machine addresses because they are not big enough on
> > PAE systems.
> > This patch fixes the issue using phys_addr_t instead and enables
> > XEN_GNTDEV compilation again.
> >
> >
> > Signed-off-by: Stefano Stabellini<stefano.stabellini@xxxxxxxxxxxxx>
> >
> >      
> BTW gntdev is used by qemu to provide the console backend to pv guests.
>    
Is that recent?  Console had been working before hadn't it?

The gntdev problems I saw were more locking related than anything to do 
with PAE.  Did you try testing with lock debugging enabled?
Thanks,
    J

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